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Numerical Study of the Energy Absorption Performance of 3D Printed Sandwich Structures

Estrada Quirino, Zubrzycki Jarosław, Reynoso-Jardón Elva, Szwedowicz Dariusz, Rodriguez-Mendez Alejandro, Marchewka Magdalena, Vergara-Vazquez Julio, Bastarrachea Aztlán, Silva Jesús M.

Advances in Science and Technology. Research Journal

2023

Vol. 17, no 5

153--162

Nowadays, Fused Deposition Modeling (FDM) is a powerful tool for manufacturing complex components, due to its customizability, low cost, accessibility, and fast prototyping time. It is an alternative for creating thin-walled structures, as it allows for novel designs. This article focuses on the design and numerical evaluation of 3D printed sandwich structures for energy absorption applications. For this purpose, five structures of Acrylonitrile Butadiene Styrene (ABS) were designed. To ensure optimal performance, the 3D printing parameters were optimized based on the corresponding literature. The structures had cores based on polygonal and cell arrangements. The effects of cross-section and mass on energy absorption were analyzed, and parameters such as energy absorption, peak load, mean force, and crush force efficiency (CFE) were determined during the study. The structures were assessed by out-of-plane compression tests. The numerical analysis was executed using Abaqus finite element software. Results showed that the energy absorption performance is primarily determined by the geometry and density of the structures. The best performance was found for a circular cellular structure, with a CFE of 0.884.

Resolution in the 3D modeling of objects for additive manufacturing and reverse engineering – shutter effect

Coutiño-Moreno Elvis, Estrada Quirino, Maldonado-Onofre Daniel, Rodriguez-Mendez Alejandro, Gomez-Giron Julio

Applied Computer Science

2021

Vol. 17, no 1

40--52

This article presents a proportional relationship between Shutter and the value of the resolution scanning system that allows decision making for modeling 3D parts used in reverse engineering and additive manufacturing. As a first step, the object of interest is treated to dim excessive brightness, then the object is scanned (by point cloud or mesh) with the use of a Handyscan 700 scanner. The point cloud is processed with the Geomagic software Desing X to generate a CAD image and a “.stl” file for 3D printing.